安装发电机拆卸和安装三相发电机。
Install generator removing and installing three-phase generator.
可在三相晶闸管变流装置中应用。
This device can be used in three phase converter assembly using thyristors.
三相不对称负荷造成三相不平衡。
The three-phase asymmetry loads cause the three-phase imbalance.
三相电路的分析比单相电路难不了多少。
The analysis of three-phase circuits is little more difficult than that of single-phase circuit.
安装三相发电机拆卸和安装三相发电机。
Install three-phase generator removing and installing three-phase generator.
每根柱都使用一个三相感应电动机进行驱动。
本文主要论述三相直流无刷电机调速系统的硬件设计方法。
This article mainly discusses the designations of three-phase BLDCM velocity modulation systems hardware.
该系统可以避免三相不平衡负载对逆变器输出电压的影响。
This system can avoid the influence that three-phase imbalance load towards the output voltage of inverter.
然后先容了本三相cpu卡预支费电能表所满足的技术条件。
The three-phase CPU card power meter's technical condition is being introduced.
实践证明，这种变压器三相侧电流的不平衡程度可以满足有关规定。
It has been proved in practice that the unbalance degree of the three-phase side current of this transformer can meet the requirements of the related regulations.
目的：评价放射性核素三相骨显像在骨缺缺损移植修复过程中的价值。
Objective: To evaluate the value of multiphase bone imaging in the transplantation and repair of bone defect.
目前步进电机可分为两相、三相、五相等几种，常用的是五相步进电机。
Currently stepping motor can be divided into two phase, three-phase, five equal several, commonly used in five is stepping motor.
给出了典型元件的三相模型，特别是给出了铁道牵引变电所的三相模型。
Three phase models of typical elements , especially the model of railway drawing substation , are provided .
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
主电力是由两个发动机驱动发电机供应三相，115伏400周期交流电。
Primary electrical power is provided by two engine driven generators which supply three-phase, 115 volt 400 cycle alternating current.
我们通常的相图是这样，这个轴是温度轴，这个轴是压强轴，这里是三相点。
So our usual phase diagram here with temperature on this axis here and pressure on this axis here, and we've got our triple point sitting here.
设备应放置在无剧烈振动的地面或工作台上，接入三相四线380v的电网。
The equipment should be placed on the ground without violent vibration or on the working stage and connected in the power grid of 380v with three phase and four wire.
分析表明，线路末端三相故障时，线路首端的测量阻抗不与故障距离成正比。
The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.
第二章建立了配电网络各种元件的三相数学模型，这是三相潮流计算的基础。
In the second chapter, three-phase models for distribution system elements are established, which is the basis of three-phase power flow.
相反地，特斯拉跑车公司只需要动用一个传动设备——那就是三相诱导式发动机的灵活性。
By contrast, the Tesla Roadster USES just one gear-such is the flexibility of its three-phase induction motor.
重达52千克（115磅），特斯拉跑车公司的小型三相诱导式发动机甚至还没有一个西瓜大。
Weighing in at 52kg (115lb), the Tesla Roadster's tiny three-phase induction motor is no bigger than a watermelon.
能耗制动是在异步电动机切离三相电源后，在定子回路通入直流电流，实现能耗制动。
The dynamic braking means that after three-phase voltage is switched off asynchronous dynamo the dc current flows into the stator circuit to realize dynamo braking.
利用有限元算法分析了三相电力变压器绕组各线匝在不同运行模式下电动力引起振动。
Based on finite element method (FEM), the vibration of power transformer windings caused by electrodynamic force is analyzed.
本系列发电机为三相带有中性点的星形接法，线电压为400v，相电压为230v。
This generator employs three phrase star connections with neutral point, the wire voltage is 400v and the phrase voltage is 230v.
三相单向换能器具有损耗小，带宽大(30%)等优点，但是这种换能器的调整较困难。
SAW 3-phase unidirectional transducers offering advantages of. low loss and wide bandwidth (30%) have great difficulty in adjustment.
采用了以8098单片机和三相高频可编程脉宽控制器SLE4520为核心的控制系统。
The control system of this inverter is composed of 8098 single chip microprocessor and the new type three phase PWM IC SLE4520.
如果考虑三相点，这里有三个相，那么自由度的数目，为1减去3得负，再加上2等于零。
Then if I change to the triple point, where the number of phases is three, then the number of degrees of freedom 2 is one minus three is minus two, two plus two is zero.
串级调速系统的主要组成部分是线绕式异步电动机，三相桥式整流器和三相可控硅逆变器。
A cascade speed control system mainly consists of a wound asynchronous motor, a three-phase rectifier and a three-phase thyristor (?) inverter.
由三相pwm逆变器产生的共模和差模电压可以在电机驱动中产生足够大的共模和差模电流。
The common and differential mode voltage produced by the PWM inverter can generate large common and differential current in the motor driving system.
由三相pwm逆变器产生的共模和差模电压可以在电机驱动中产生足够大的共模和差模电流。
The common and differential mode voltage produced by the PWM inverter can generate large common and differential current in the motor driving system.
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